static void Main(string[] args) { IPrinterWindows printer; Console.WriteLine("Pilih Printer"); Console.WriteLine("1. Epson"); Console.WriteLine("2. Canon"); Console.WriteLine("3. LaserJet\n"); Console.Write("Nomor Printer [1..3]: "); int nomorPrinter = Convert.ToInt32(Console.ReadLine()); if (nomorPrinter == 1) { printer = new Epson(); } else if (nomorPrinter == 2) { printer = new Canon(); } else { printer = new LaserJet(); } printer.Show(); printer.Print(); Console.ReadKey(); }